on / at Friday night

English as a Second Language English Vocabulary, Grammar and Idioms
1

Hello.
I know that “on” is used with expressions like “On Sunday morning” or “on Monday evening”:

I want to go to the swimming pool on Sunday morning.

But what preposition must I use if I change “morning” or “evening” for “night”? In other words “day of the week + night”:

I want to go to the disco on / at Friday night.

Which preposition will be correct in this case?
Thanks in advance.

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2

It still would be ‘on Friday night’. We say ‘at night’ but ‘on Friday night’.

TOEIC listening, photographs: Three kids in the snow

3

At noon
At 3:00
On Friday
On Friday morning
In December
In early/mid/late December
In 2022
On the morrow ( poetic - should never be used otherwise )
At the break of dawn
At sunset
In a few days

Note in daily conversation that it’s fairly common with some of these to skip the preposition altogether.
Let’s get together on Friday night.
Let’s get together Friday night.

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